Detecting Certain Parts of a Specific Signal

Hello,

I created a random signal as follows:

clear all; clc;
% Creating signal
x = 0:0.1:pi;
y = 5*sin(x)+10;
j = [];

for i = 1:20
    j(i) = 9.9 + (10.1-9.9) .* rand(1,1);
end

v = cat(2, j, y);
y = 2*sin(x)+10;
v = cat(2, v, j);
v = cat(2, v, y);
v = cat(2, v, j);
v = cat(2, v, j);

x = pi:0.1:2*pi;
y = 4*sin(x)+10;
v = cat(2, v, y);
v = cat(2, v, j);
v = cat(2, v, j);

x = 0:0.1:pi;
y = 1.5*sin(x)+10;
v = cat(2, v, y);
v = cat(2, v, j);
v = cat(2, v, j);

% Plotting
plot(v)

I want to detect all of the convex and concave structures (not only the amplitude but also the width) in this signal as in the image below. Can you suggest a method for this?

Answer 1

[Star Strider]

Start with the findsignal function. It may be necessary to invert the tall peak to find the inverted version of it.